derek.holloway
7502bf64a4
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70 lines
2.8 KiB
HLSL
70 lines
2.8 KiB
HLSL
// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-compute -emit-llvm -disable-llvm-passes -o - -hlsl-entry main %s | FileCheck %s
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struct Pair {
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int First;
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int Second;
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int getFirst() {
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Pair Another = {5, 10};
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this = Another;
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return this.First;
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}
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// In HLSL 202x, this is a move assignment rather than a copy.
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int getSecond() {
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this = Pair();
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return Second;
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}
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// In HLSL 202x, this is a copy assignment.
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Pair DoSilly(Pair Obj) {
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this = Obj;
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First += 2;
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return Obj;
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}
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};
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[numthreads(1, 1, 1)]
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void main() {
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Pair Vals = {1, 2.0};
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Vals.First = Vals.getFirst();
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Vals.Second = Vals.getSecond();
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(void) Vals.DoSilly(Vals);
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}
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// This tests reference like implicit this in HLSL
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// CHECK-LABEL: define {{.*}}getFirst
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// CHECK-NEXT:entry:
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// CHECK-NEXT:%[[#C_ENTRY:]] = call token @llvm.experimental.convergence.entry()
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// CHECK-NEXT:%this.addr = alloca ptr, align 4
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// CHECK-NEXT:%Another = alloca %struct.Pair, align 1
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// CHECK-NEXT:store ptr %this, ptr %this.addr, align 4
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// CHECK-NEXT:%this1 = load ptr, ptr %this.addr, align 4
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// CHECK-NEXT:call void @llvm.memcpy.p0.p0.i32(ptr align 1 %Another, ptr align 1 @__const._ZN4Pair8getFirstEv.Another, i32 8, i1 false)
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// CHECK-NEXT:call void @llvm.memcpy.p0.p0.i32(ptr align 1 %this1, ptr align 1 %Another, i32 8, i1 false)
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// CHECK-NEXT:%First = getelementptr inbounds nuw %struct.Pair, ptr %this1, i32 0, i32 0
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// CHECK-LABEL: define {{.*}}getSecond
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// CHECK-NEXT:entry:
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// CHECK-NEXT:%[[#C_ENTRY:]] = call token @llvm.experimental.convergence.entry()
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// CHECK-NEXT:%this.addr = alloca ptr, align 4
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// CHECK-NEXT:%ref.tmp = alloca %struct.Pair, align 1
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// CHECK-NEXT:store ptr %this, ptr %this.addr, align 4
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// CHECK-NEXT:%this1 = load ptr, ptr %this.addr, align 4
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// CHECK-NEXT:call void @llvm.memset.p0.i32(ptr align 1 %ref.tmp, i8 0, i32 8, i1 false)
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// CHECK-NEXT:call void @llvm.memcpy.p0.p0.i32(ptr align 1 %this1, ptr align 1 %ref.tmp, i32 8, i1 false)
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// CHECK-NEXT:%Second = getelementptr inbounds nuw %struct.Pair, ptr %this1, i32 0, i32 1
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// CHECK-LABEL: define {{.*}}DoSilly
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// CHECK-NEXT:entry:
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// CHECK-NEXT: %[[#C_ENTRY:]] = call token @llvm.experimental.convergence.entry()
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// CHECK-NEXT: [[ThisPtrAddr:%.*]] = alloca ptr
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// CHECK-NEXT: store ptr {{.*}}, ptr [[ThisPtrAddr]]
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// CHECK-NEXT: [[ThisPtr:%.*]] = load ptr, ptr [[ThisPtrAddr]]
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// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 [[ThisPtr]], ptr align 1 [[Obj:%.*]], i32 8, i1 false)
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// CHECK-NEXT: [[FirstAddr:%.*]] = getelementptr inbounds nuw %struct.Pair, ptr [[ThisPtr]], i32 0, i32 0
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// CHECK-NEXT: [[First:%.*]] = load i32, ptr [[FirstAddr]]
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// CHECK-NEXT: [[FirstPlusTwo:%.*]] = add nsw i32 [[First]], 2
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// CHECK-NEXT: store i32 [[FirstPlusTwo]], ptr [[FirstAddr]]
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// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 {{.*}}, ptr align 1 [[Obj]], i32 8, i1 false)
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